/Engine/Plugins/Experimental/Mutable/Source/CustomizableObjectEditor/Classes/MuCOE/Nodes/CustomizableObjectNodeCopyMaterial.h
Input material pin can only be connect to a NodeMaterial output pin or a NodeExternalPin. A connection to a NodeMaterialCopy output pin is not allowed.
virtual bool CanConnect ( const [UEdGraphPin](API\Runtime\Engine\EdGraph\UEdGraphPin) * InOwnedInputPin, const [UEdGraphPin](API\Runtime\Engine\EdGraph\UEdGraphPin) * InOutputPin, bool & bOutIsOtherNodeBlocklisted, bool & bOutArePinsCompatible ) const